MAX5915(2002) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX5915 Datasheet PDF : 25 Pages
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Dual PCI 2.2 Hot-Swap Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V-12VIN = -12V, V+12VIN = +12V, V3.3VAUXIN = +3.3V, VON_ = VAUXON_ = +5V, TA = -40°C to +85°C, unless otherwise specified.
Typical values are at TA = +25°C.)
PARAMETER
On-Resistance of Internal Switch
SYMBOL
RDS(ON), 3.3VAUX
CONDITIONS
TA = +25°C, ID = 0.4A
TA = +85°C, ID = 0.4A
Foldback Current Limit
Current-Foldback Threshold
I3.3VAUXIN, LIM V3.3VAUXO_ = 0
Output current rising (Note 2)
Output Undervoltage Threshold V3.3VAUXIN, UV
Auxiliary Input UVLO Delay Time
tDEG, UVLO
(Note 1)
3.3VAUXO_ Internal Pulldown
R3.3VAUXO_ ON_ = 0
ON AND AUXON COMPARATORS
Threshold Voltage
Hysteresis
VHYS
Input Bias Current
IB, COMP
ON_ and AUXON_ Deglitch
Time
tDEG
Figures 5–8 (Note 3)
FAULT RESPONSE, PGOOD_ STATUS OUTPUT
PGOOD_ Output Overcurrent
and Undervoltage Response
Time
tRESP
Figures 5–8
MIN
TYP MAX UNITS
0.24
0.4
Ω
0.6
0.5
0.75
1.0
A
1.2
A
2.76
2.89
2.99
V
1.6
ms
1
kΩ
1.0
2.1
V
25
mV
20
µA
4
µs
0.5
1.5
ms
Output Overcurrent and
Undervoltage Deglitch Time
PGOOD_ Startup Time Out
Autorestart Delay
PGOOD_ Output Low Voltage
PGOOD_ Output High Leakage
Current
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Full Thermal Shutdown
Threshold
tDELAY
tSTART
tRESTART
VOL
ILEAK
TSD
THYS
TSD, FULL
Figures 3–7
See Figures 1, 2, 5, 6, 7, and 8
Delay time to restart after OC and/or
UV shutdown
ISINK = 2mA, ON_ = 0
VPGOOD_ = +5.5V
(Note 4)
(Note 5)
16 ✕
ms
tRESP
4✕
tDELAY
ms
64 ✕
ms
tSTART
0.5
0.7
V
1
µA
125
°C
5
°C
TSD +
20
°C
Full Thermal Shutdown
Hysteresis
THYS, FULL
5
°C
Note 1: tDEG, UVLO is negative edge triggered. There is no time delay when the inputs rise above the UVLO threshold.
Note 2: The current threshold when the output current starts to fold back. See the Typical Operating Characteristics.
Note 3: tDEG is negative edge triggered. ON_ or AUXON_ transition from low to high has no delay.
Note 4: Temperature threshold at which the outputs of the channel with overcurrent shut down.
Note 5: The temperature threshold at which both channels shut down.
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